Question 1

The brain and spinal cord make up the ____________________ nervous system.

Accepted Answer

central

Question 2

Immediate levels of hearing loss can occur from

Accepted Answer

A) iPod use. 
B) listening to traffic. 
C) hearing a gun shot at close range. 
D) attending a symphony in an enclosed concert hall. 
A) iPod use. 
B) listening to traffic. 
C) hearing a gun shot at close range. 
D) attending a symphony in an enclosed concert hall. C

Question 3

When a signal causes sodium ions to flow into a neuron it becomes ____________________.

Accepted Answer

depolarized

Question 4

Our overall perception of food depends on

Accepted Answer

A) chemoreceptors. 
B) photoreceptors. 
C) mechanoreceptors. 
D) all of the above 
A) chemoreceptors. 
B) photoreceptors. 
C) mechanoreceptors. 
D) all of the above

Question 5

The use of ear plugs in areas of loud sounds has been shown not to reduce the risk of hearing loss.

Accepted Answer

A) True 
 B)False

Question 6

As you read this question, your eyes are moving to project the image of each word on your

Accepted Answer

A) pupil. 
B) lens. 
C) rods. 
D) fovea. 
A) pupil. 
B) lens. 
C) rods. 
D) fovea.

Question 7

The sound intensity in the front rows of a rock concert is approximately 110 decibels. A pair of earplugs reduces sound intensity by about 30 decibels. A person wearing earplugs who is seated in the front rows of a rock concert for 1 hour has sufficiently protected his or her ears from hearing damage.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is an example of a reflex arc?

Accepted Answer

A) After reading all the possible answers to this question, you choose answer A. 
B) The pupils of your eyes increase in diameter when you walk into a dark room. 
C) A cell in your body releases insulin in response to the intake of food. 
D) On a hot day, your body releases sweat. As the sweat evaporates, your body cools. 
A) After reading all the possible answers to this question, you choose answer A. 
B) The pupils of your eyes increase in diameter when you walk into a dark room. 
C) A cell in your body releases insulin in response to the intake of food. 
D) On a hot day, your body releases sweat. As the sweat evaporates, your body cools.

Question 9

The center of the human retina has a region called the ____________________ where cones are most densely packed.

Accepted Answer

The answer of The center of the human retina has...

Question 10

A drug that inhibits the function of mechanoreceptors would affect your sense of

Accepted Answer

A) touch. 
B) light. 
C) individuality. 
D) smell. 
A) touch. 
B) light. 
C) individuality. 
D) smell.

Question 11

Nodes of Ranvier are found only in ____________________ neurons.

Accepted Answer

The answer of Nodes of Ranvier are found only in...

Question 12

The eye is not like a camera in which of the following ways?

Accepted Answer

A) Both the eye and the camera can adjust their focus to account for how far away an object is located. 
B) Both the eye and the camera have lenses that bend light waves. 
C) Both the eye and the camera have mechanisms to control the amount of light that enters. 
D) Both the eye and the camera focus by changing the distance between the lens and the surface that reacts to light. 
A) Both the eye and the camera can adjust their focus to account for how far away an object is located. 
B) Both the eye and the camera have lenses that bend light waves. 
C) Both the eye and the camera have mechanisms to control the amount of light that enters. 
D) Both the eye and the camera focus by changing the distance between the lens and the surface that reacts to light.

Question 13

A drug that decreases your ability to taste and smell might inhibit the function of

Accepted Answer

A) photoreceptors. 
B) thermoreceptors. 
C) mechanoreceptors. 
D) chemoreceptors. 
A) photoreceptors. 
B) thermoreceptors. 
C) mechanoreceptors. 
D) chemoreceptors.

Question 14

The hypothalamus contains neurons that release hormones in response to action potentials.

Accepted Answer

A) True 
 B)False

Question 15

When the difference in charge across a neuron's cell membrane decreases the cell is depolarizing.

Accepted Answer

A) True 
 B)False

Question 16

We perceive pressure waves in air as ____________________.

Accepted Answer

The answer of We perceive pressure waves in air as...

Question 17

The distance between an axon terminal and the receiving cell must be very small because

Accepted Answer

A) the plasma membranes of the two cells must be almost touching for action potentials to pass from one to the other. 
B) neurons use the diffusion of neurotransmitters to transmit stimuli between cells and diffusion is only rapid over short distances. 
C) the short distance creates a large surface area so that the receiving cell can receive a large number of neurotransmitters at once, ensuring rapid signal transmission. 
D) the short distance allows sodium to be exchanged between the two cells, ensuring that the receiving cell has enough sodium to create an action potential. 
A) the plasma membranes of the two cells must be almost touching for action potentials to pass from one to the other. 
B) neurons use the diffusion of neurotransmitters to transmit stimuli between cells and diffusion is only rapid over short distances. 
C) the short distance creates a large surface area so that the receiving cell can receive a large number of neurotransmitters at once, ensuring rapid signal transmission. 
D) the short distance allows sodium to be exchanged between the two cells, ensuring that the receiving cell has enough sodium to create an action potential.

Question 18

The cell indicated by the arrow in the figure below directly interacts with environmental stimuli.

Accepted Answer

A) True 
 B)False

Question 19

A neurotransmitter can inhibit the formation of an action potential in a receiving cell.

Accepted Answer

A) True 
 B)False

Question 20

Action potentials can transmit information rapidly but weaken as they move along a neuron.

Accepted Answer

A) True 
 B)False

Exam 30: Nervous and Sensory Systems

The brain and spinal cord make up the ____________________ nervous system.

Immediate levels of hearing loss can occur from

When a signal causes sodium ions to flow into a neuron it becomes ____________________.

Our overall perception of food depends on

The use of ear plugs in areas of loud sounds has been shown not to reduce the risk of hearing loss.

As you read this question, your eyes are moving to project the image of each word on your

Which of the following is an example of a reflex arc?

The center of the human retina has a region called the ____________________ where cones are most densely packed.

A drug that inhibits the function of mechanoreceptors would affect your sense of

Nodes of Ranvier are found only in ____________________ neurons.

The eye is not like a camera in which of the following ways?

A drug that decreases your ability to taste and smell might inhibit the function of

The hypothalamus contains neurons that release hormones in response to action potentials.

When the difference in charge across a neuron's cell membrane decreases the cell is depolarizing.

We perceive pressure waves in air as ____________________.

The distance between an axon terminal and the receiving cell must be very small because

The cell indicated by the arrow in the figure below directly interacts with environmental stimuli.

A neurotransmitter can inhibit the formation of an action potential in a receiving cell.

Action potentials can transmit information rapidly but weaken as they move along a neuron.

The Nature of Science and the Characteristics of Life

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Stem Cells, Cancer, and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

Dna and Genes

From Gene to Protein

Dna Technology

How Evolution Works

Evolution of Populations

Speciation and the Origins of Biological Diversity

The Evolutionary History of Life

The Biosphere

Growth of Populations

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Skeletons, Muscles, and Movement

Defenses Against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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